(19)
(11) EP 0 339 590 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
03.06.1992 Bulletin 1992/23

(43) Date of publication A2:
02.11.1989 Bulletin 1989/44

(21) Application number: 89107498.1

(22) Date of filing: 25.04.1989
(51) International Patent Classification (IPC)4: B60T 8/32
(84) Designated Contracting States:
DE GB

(30) Priority: 25.04.1988 JP 100182/88

(71) Applicant: NISSAN MOTOR CO., LTD.
Yokohama-shi Kanagawa-ken (JP)

(72) Inventor:
  • Matsuda, Toshiro
    Sagamihara-shi Kanagawa-ken (JP)

(74) Representative: Grünecker, Kinkeldey, Stockmair & Schwanhäusser Anwaltssozietät 
Maximilianstrasse 58
80538 München
80538 München (DE)


(56) References cited: : 
   
       


    (54) Anti-skid brake control system for automotive vehicle with feature of derivation of road surface friction representative data


    (57) An anti-skid brake control system monitors wheel deceleration during a period from a timing at which vehicular braking operation is initiated to a timing at which anti-skid brake control becomes active. Because the magnitude of wheel deceleration during the period set forth above is approximately inversely proportional to a road friction, the difference of deceleration can be a road friction indicative data. A vehicle body deceleration gradient data for the first skid control cycle is approximated or projected on the basis of the road friction indicative data so as to derive a projected vehicle body speed indicative data and a target wheel speed indicative data for the first skid control cycle.







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